Answer:
The human body is comprised of trillions of cells. Over 200 types of cells make up the organs, bones, muscles and nervous system. All the cells have similarities, such as a membrane on the outer surface and organelles--structures that perform cellular functions--within the cell.
The answer is; C
Meisos involve halving the genetic material of a cell to form garments. The gametes of two parents fuse to form a zygote that6 returns the genetic material to normal ploidy so it can develop into offspring. The fusion of two gametes is called fertilization.
Answer:
1:1 (brown:blonde)
Explanation:
Brown hair color (B) is dominant over blonde hair color (b).
Heterozygous parent will have the genotype Bb
Homozygous recessive parent will have the genotype bb.
Crossing hetezygous parent with homozygous recessive parent:
Bb x bb
Progeny: Bb, Bb, bb, and bb.
2 Bb brown hair
2 bb blonde hair
Phenotypic ratio = 1:1 (brown:blonde)
The correct answer is 1:1 (brown:blonde).
Earth's history. In the worst one, 250 million years ago, 96 percent of marine species and 70 percent of land species died off. It took millions of years to recover.
